18K YELLOW GOLD AUTOMATIC GENTLEMAN’S WRISTWATCH, REF 6440
One of the most highly-coveted timepieces from the mid-20th century, the reference 6440 — affectionately known as the Cioccolatone among collectors, due to its resemblance to a square of chocolate — utilizes one of the first automatic calibers created by Vacheron Constantin. This particular model, manufactured in 1960, employs the 12”-1071, which introduced an 18k gold oscillating weight and ruby ball-bearing. Its production started in 1957, the iconic silhouette, one of less than 140 produced in yellow gold, is accentuated by stepped-level lugs and a gently rounded bezel.
Dial: Silvered dial, applied gold indexes
Calibre: cal. 12”K1071 automatic, 29 jewels
Movement number: 545’734
Case: 18k yellow gold, snap-on back
Case number: 378’182
Closure: 18k yellow gold Vacheron Constantin pin buckle
Dimensions: 43 mm length x 35mm width
Signed: case, dial and movement
Manufactured: in 1960
This watch will come with a certificate of authenticity and an exclusive box provided by Vacheron Constantin.
• hairspring with a terminal curve to reduce the bad effects of gravity
• swan’s neck micrometric regulator to facilitate a fine metering
• rhodium-plated brass movement which protects against corrosion and preserve the Côtes de Genève decoration. Traditional Genevan finishing which gives a unique aspect to the bridges.
• Flame blued steel and polished screws. Traditional finishing which gives an unique aspect to steel components.
• winding-mechanism with ruby ball bearing. Benefits:
• reduces the normal wear
• increases the weight inertia
• winds the mainspring faster
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Please note that this timepiece has been fully serviced by the Vacheron Constantin Heritage Department.
DIAL: showing signs of restauration, with a fingerprint to the upper left corner, with some dirt to the edges.
CASE: with faint hallmarks, case retaining its original shape. With dents to the casebands, back and bezel. The back displays some faint spare scratches to the brushed finish.
MOVEMENT: Working at time of cataloguing.
The watch has not been tested to determine the accuracy of its timekeeping. Please note that Sotheby's does not guarantee the future working of the movement and that a service may be required at the buyer's discretion.
The lot is sold in the condition it is in at the time of sale. The online condition report is provided to assist you with assessing the condition of the lot and is for guidance purposes only. The images of the lot also form part of the online condition report for the lot provided by Sotheby's. Any reference to condition in the online condition report does not amount to a full description of condition. The online condition report may make reference to particular imperfections of the lot but you should note that the lot may have other faults not expressly referred to in the online condition report of the lot or shown in the online images of the lot (for example, the online condition report may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome). Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. The online condition report may not refer to all faults, restoration, alteration or adaptation because Sotheby's is not a professional conservator or restorer but rather the online condition report is a statement of subjective, qualified opinion genuinely held by Sotheby's (for example, information regarding colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's). Please also note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and wrist bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. In addition, certain images of the lot provided online may not accurately reflect the actual condition of the lot (for example, the online images may represent colours and shades which are different to the lot's actual colour and shades). For these reasons, the online condition report is not an alternative to taking your own professional advice regarding the condition of the lot. Prospective buyers should also refer to the Buying at Auction guide which includes important notices concerning the type of property in this sale. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species. Please be advised that wristbands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping. NOTWITHSTANDING THIS ONLINE CONDITION REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS (ONLINE ONLY).
From Vacheron Constantin's Heritage Collection